# Analogue Filters (Picking the right filter!)

I'm new to Analogue and I'm trying to find the Ideal filter for the following specifications:

• $$0.1\ \rm dB$$ ripple
• Cutoff Frequency $$F_c = 80\ \rm{kHz}$$
• An attenuation of $$40\ \rm dB$$ at the stop-band frequency $$F_s = 130 \ \rm kHz$$

I'm not sure if I'm on the right path but till now with all the research I've done I think I have to use a Low pass, 7th order Chebyshev Filter (Type 1) using Sallen key topology (not sure why but I was thinking since it have less noise at a gain of 1 I should go with a Sallen-key).

Any help and explanation would be great!